2007 Mazda CX-9 Electrical system Problems
- Complaints
- 6about this part
- Share
- 7%of 86 total for the year
- Median mileage
- 113,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the electrical system of the 2007 Mazda CX-9, 7% of the 86 complaints for this model year. Where a mileage was given, the median is 113,000 miles. 1 a fire, according to the filers. 1 recall campaign on record is filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While driving on the williamsburg bridge there was a slight incline during this time the vehicle was trying to accelerate and that's when it started loosing power and started misfiring. Fortunately, this happened very early in the morning and there were no vehicles except mine. When I got to the other side of the bridge I got off the expressway immediately.”
NHTSA complaint #10408255, filed 2011-06, 34,543 miles“Was driving on interstate at night. Engine light came on and car immediately drove as if it were not operating on all cylinders. Took it to dealership and it had multiple misfire codes, 301, 351, 352, 354. I researched and found multiple complaints filed on-line regarding the exact misfire codes I experienced and PCM issues in this particular year, make and model. This problem is way too expensive to fix on a personal level. If Mazda is aware that this has been an issue, they need to remedy it. …”
NHTSA complaint #10615507, filed 2014-07, 113,000 miles“Traveling on interstate engine suddenly starts to stutter. Push down on the gas and there is no power. Car cannot go over 40 MPH. Engine light comes on. Take car to my local mechanic. Informed that ignition coils #1,2,4 are ruined. They are replaced, 12 hours later ignition coil #2 fails again. Mechanic gives me Mazda bulletin #01-026/11 calling out issues with PCM and how PCM will cause mis-firing of ignition coils causing the coils to fail prematurely. Coil #2 when replaced was charred and split and was leaking oil. …”
NHTSA complaint #10583135, filed 2014-04, 124,230 miles“Back in 2011 (my Mazda CX-9 was only 4 yo), I was driving down the turnpike at 65 MPH when my car began to stutter, it would not accelerate and it came to an idle. Thankfully I was near the shoulder of the road so I was able to pull over. South motors Mazda dealership stated the computer (PCM) was fried. It was replaced under warranty. Current day: 2016. My car began having the same symptoms last week when driving 15 MPH in a residential area. My car currently has approximately 99,500 miles. Had my car towed to dealership. Ocean Mazda stated the PCM and 3 coils are fried again. …”
NHTSA complaint #10926083, filed 2016-11, 99,500 miles“The contact owns a 2007 Mazda cx9. While driving 55 MPH, a burning wire odor emitted in and outside the rear of the vehicle. The contact noticed that the rear windshield wiper motor was burning. The contact disconnected the motor for the windshield wipers. The vehicle was not diagnosed nor repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 180,000.”
NHTSA complaint #10894621, filed 2016-08, 180,000 milesRelated recalls
- 09V066000Feb 23, 2009Mazda is recalling 30,600 my 2007-2009 cx9 vehicles equipped with power adjustable seat with position memory function. The seat harness routed underneath the…Covers: Mazda CX-9 2007–2009
Related service bulletins
- 11037899Sep 11, 2026DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS…
- 11034447Jun 19, 2026This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g…
- 11026917Dec 17, 2025If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 11007019Aug 15, 2024If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 11006987Aug 8, 2024In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by…
- 10244679Oct 11, 2023If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 10237216May 24, 2023If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 10232299Feb 28, 2023Speedometer replacement procedure
- 10226924Nov 14, 2022If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 10217209Jul 18, 2022In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 1 | 8% |
| 2022 | 2 | 18% |
| 2021 | 2 | 5% |
| 2020 | 4 | 21% |
| 2019 | 7 | 13% |
| 2018 | 15 | 12% |
| 2017 | 2 | 3% |
| 2016 | 14 | 13% |
| 2015 | 1 | 3% |
| 2014 | 2 | 4% |
| 2013 | 1 | 1% |
| 2012 | 5 | 2% |
| 2011 | 6 | 4% |
| 2010 | 6 | 3% |
| 2008 | 13 | 8% |
| 2007 | 6 | 7% |
Other parts of the 2007 Mazda CX-9
37 complaintsAir bags
18 complaintsTransmission and drivetrain
12 complaintsSteering
9 complaintsBrakes
7 complaintsOther or unknown
6 complaintsFuel system
5 complaintsWheels
5 complaintsBody and structure
4 complaintsEngine
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsElectronic stability control
1 complaints
← All problems reported for the 2007 Mazda CX-9
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology